[....] Starting enhanced syslogd: rsyslogd[ 12.472224] audit: type=1400 audit(1520279665.602:4): avc: denied { syslog } for pid=3646 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. 2018/03/05 19:54:42 parsed 1 programs 2018/03/05 19:54:42 executed programs: 0 syzkaller login: [ 29.155771] IPVS: Creating netns size=2536 id=1 [ 29.173957] sg_write: data in/out 167162/110 bytes for SCSI command 0xff-- guessing data in; [ 29.173957] program syz-executor0 not setting count and/or reply_len properly [ 29.191202] kasan: CONFIG_KASAN_INLINE enabled [ 29.195762] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.203167] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.209383] Dumping ftrace buffer: [ 29.212904] (ftrace buffer empty) [ 29.216588] Modules linked in: [ 29.219876] CPU: 1 PID: 3816 Comm: syz-executor0 Not tainted 4.9.86-gb324a70 #58 [ 29.227379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.236705] task: ffff8801d7edc800 task.stack: ffff8801d7c20000 [ 29.242729] RIP: 0010:[] [] sg_read+0xd06/0x1440 [ 29.250820] RSP: 0018:ffff8801d7c27a40 EFLAGS: 00010246 [ 29.256236] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8266b40d [ 29.263485] RDX: 0000000000000000 RSI: 000000000000001a RDI: ffff8801d75c2270 [ 29.270724] RBP: ffff8801d7c27b50 R08: 0000000000000000 R09: ffffed003a6ce689 [ 29.277963] R10: 0000000000000005 R11: ffffed003a6ce688 R12: 0000000000001000 [ 29.285204] R13: 0000000000000000 R14: ffff8801d3673420 R15: ffff8801d75c2240 [ 29.292447] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009ad5900 [ 29.300643] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.306494] CR2: 0000000020e94000 CR3: 00000001d9110000 CR4: 0000000000160670 [ 29.313735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.320973] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.328216] Stack: [ 29.330337] ffffffff844de3a0 0000000000000105 ffff8801d75c2258 ffff88010000001a [ 29.338318] 0000000000000246 ffff8801d75c2268 000000000000003e ffffffff83be4960 [ 29.346288] ffff8801cfed4000 1ffff1003af84f54 0000000020e94000 0000000020e94024 [ 29.354257] Call Trace: [ 29.356821] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 29.363455] [] ? fsnotify+0x86/0xf30 [ 29.368789] [] ? fsnotify+0xf30/0xf30 [ 29.374211] [] ? avc_policy_seqno+0x9/0x20 [ 29.380066] [] do_loop_readv_writev.part.17+0xc8/0x2b0 [ 29.386963] [] compat_do_readv_writev+0x5ff/0x740 [ 29.393433] [] ? do_pwritev+0x1a0/0x1a0 [ 29.399026] [] ? exit_robust_list+0x230/0x230 [ 29.405150] [] ? handle_mm_fault+0x4c1/0x2470 [ 29.411262] [] ? __pmd_alloc+0x410/0x410 [ 29.416951] [] ? selinux_file_permission+0x82/0x460 [ 29.423587] [] compat_readv+0xe3/0x150 [ 29.429094] [] do_compat_readv+0xf4/0x1d0 [ 29.434862] [] ? compat_readv+0x150/0x150 [ 29.440627] [] compat_SyS_readv+0x26/0x30 [ 29.446394] [] ? SyS_pwritev2+0x80/0x80 [ 29.451991] [] do_fast_syscall_32+0x2f5/0x870 [ 29.458103] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.464740] [] entry_SYSENTER_compat+0x90/0xa2 [ 29.470938] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 [ 29.497557] RIP [] sg_read+0xd06/0x1440 [ 29.503280] RSP [ 29.507100] ---[ end trace 4e28466bf780b1f2 ]--- [ 29.511865] Kernel panic - not syncing: Fatal exception [ 29.517551] Dumping ftrace buffer: [ 29.521065] (ftrace buffer empty) [ 29.524750] Kernel Offset: disabled [ 29.528349] Rebooting in 86400 seconds..